Has anyone experienced any issues with there down and menu buttons having a a notchy click feel to them compered to the other buttons,
after a few presses they appear to feel ok but after a while of not using them say 1hr they feel notchy again for the first few presses
I purchased from jura and they are going to have a look at it and possibly send to Garmin
Sorry to hear MARQ also suffers from Garmin QC level.
FR945 and 245(M) platform also suffers from this feature 
Perhaps try cleaning it before you opt for a replacement. My 5 Plus' start/stop button developed a notchy feel after ingesting some debris and it was rectified simply by soaking it in warm soapy water for a while in order to soften the debris and then hitting the button a few times to clear it.
If you run trails, you'll probably need to do this once a month (thats about my cycle anyway). That'd be a lot of frustrating replacements if you weren't able to self-service 
